not really familiar with all this but I think 1. Relative dating is where they estimate or relatively guess around how old it is so you could just put something like "an estimate of the age" or something
The answer with high importance is because:
<span>An error in DNA replication would affect many generations of cells.</span>
Many of the skeletons have associated age, sex, ancestry, and cause of death data. Individual remains with known biological information are especially valuable references. Forensic anthropologists have used these skeletons to develop standards for determining sex, age and ancestry in unknown remains
Answer:
Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil